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A rectangular garden has a width of 7x -2 and a length of 3x +10. Find the perimeter.

Sagot :

Cad311idn
(7x-2)+(7x-2)+(3x+10)+(3x+10)
=20x+16
Devishri1977idn

Answer:

20x + 16

Step-by-step explanation:

Width (w) = 7x - 2

Length (l) = 3x + 10

Perimeter = 2*(l + w)

                 = 2* (3x + 10 + 7x - 2)

                 = 2* (3x + 7x + 10 - 2 )   {Combine like terms}

                 = 2* ( 10x + 8)         {Use distributive property: a(b +c) =(a*b) + (a*c)}

                 = 2*10x + 2*8

                  = 20x + 16

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